How To Activate My At&t Sim Card Online. A factory data reset. To label your plans select the desired Phone number then select the desired Label and enter a Custom Label and select Done.
Insert the SIM after your account has been updated. Enter your 5-digit service zip. Select a rate plan Activation code from the SIM Card quick start guide for phones.
Restart your phone again and allow the activation process to complete fully.
Bring ATT your phone tablet smartwatch or other cellular devices. Tap one of the following what you see depends on your device. Prepaid SIM card If youre using an iPhone the SIM card is already in your phone Click the link to set up and activate your T. Enter the wireless number that you want to update and then click.
